// JavaScript Document
// SpryTabbedPanels.js - version 0.7 - Spry Pre-Release 1.6.1
//
// Copyright (c) 2006. Adobe Systems Incorporated.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of Adobe Systems Incorporated nor the names of its
//     contributors may be used to endorse or promote products derived from this
//     software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
(function () { // BeginSpryComponent
    if (typeof Spry == "undefined") window.Spry = {};
    if (!Spry.Widget) Spry.Widget = {};
    Spry.Widget.TabbedPanels = function (element, opts) {
        this.element = this.getElement(element);
        this.defaultTab = 0; // Show the first panel by default.
        this.tabSelectedClass = "TabbedPanelsTabSelected";
        this.tabHoverClass = "TabbedPanelsTabHover";
        this.tabFocusedClass = "TabbedPanelsTabFocused";
        this.panelVisibleClass = "TabbedPanelsContentVisible";
        this.focusElement = null;
        this.hasFocus = false;
        this.currentTabIndex = 0;
        this.enableKeyboardNavigation = true;
        this.nextPanelKeyCode = Spry.Widget.TabbedPanels.KEY_RIGHT;
        this.previousPanelKeyCode = Spry.Widget.TabbedPanels.KEY_LEFT;
        Spry.Widget.TabbedPanels.setOptions(this, opts);
        // If the defaultTab is expressed as a number/index, convert
        // it to an element.
        if (typeof (this.defaultTab) == "number") {
            if (this.defaultTab < 0) this.defaultTab = 0;
            else {
                var count = this.getTabbedPanelCount();
                if (this.defaultTab >= count) this.defaultTab = (count > 1) ? (count - 1) : 0;
            }
            this.defaultTab = this.getTabs()[this.defaultTab];
        }
        // The defaultTab property is supposed to be the tab element for the tab content
        // to show by default. The caller is allowed to pass in the element itself or the
        // element's id, so we need to convert the current value to an element if necessary.
        if (this.defaultTab) this.defaultTab = this.getElement(this.defaultTab);
        this.attachBehaviors();
    };
    Spry.Widget.TabbedPanels.prototype.getElement = function (ele) {
        if (ele && typeof ele == "string") return document.getElementById(ele);
        return ele;
    };
    Spry.Widget.TabbedPanels.prototype.getElementChildren = function (element) {
        var children = [];
        var child = element.firstChild;
        while (child) {
            if (child.nodeType == 1 /* Node.ELEMENT_NODE */ ) children.push(child);
            child = child.nextSibling;
        }
        return children;
    };
    Spry.Widget.TabbedPanels.prototype.addClassName = function (ele, className) {
        if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) != -1)) return;
        ele.className += (ele.className ? " " : "") + className;
    };
    Spry.Widget.TabbedPanels.prototype.removeClassName = function (ele, className) {
        if (!ele || !className || (ele.className && ele.className.search(new RegExp("\\b" + className + "\\b")) == -1)) return;
        ele.className = ele.className.replace(new RegExp("\\s*\\b" + className + "\\b", "g"), "");
    };
    Spry.Widget.TabbedPanels.setOptions = function (obj, optionsObj, ignoreUndefinedProps) {
        if (!optionsObj) return;
        for (var optionName in optionsObj) {
            if (ignoreUndefinedProps && optionsObj[optionName] == undefined) continue;
            obj[optionName] = optionsObj[optionName];
        }
    };
    Spry.Widget.TabbedPanels.prototype.getTabGroup = function () {
        if (this.element) {
            var children = this.getElementChildren(this.element);
            if (children.length) return children[0];
        }
        return null;
    };
    Spry.Widget.TabbedPanels.prototype.getTabs = function () {
        var tabs = [];
        var tg = this.getTabGroup();
        if (tg) tabs = this.getElementChildren(tg);
        return tabs;
    };
    Spry.Widget.TabbedPanels.prototype.getContentPanelGroup = function () {
        if (this.element) {
            var children = this.getElementChildren(this.element);
            if (children.length > 1) return children[1];
        }
        return null;
    };
    Spry.Widget.TabbedPanels.prototype.getContentPanels = function () {
        var panels = [];
        var pg = this.getContentPanelGroup();
        if (pg) panels = this.getElementChildren(pg);
        return panels;
    };
    Spry.Widget.TabbedPanels.prototype.getIndex = function (ele, arr) {
        ele = this.getElement(ele);
        if (ele && arr && arr.length) {
            for (var i = 0; i < arr.length; i++) {
                if (ele == arr[i]) return i;
            }
        }
        return -1;
    };
    Spry.Widget.TabbedPanels.prototype.getTabIndex = function (ele) {
        var i = this.getIndex(ele, this.getTabs());
        if (i < 0) i = this.getIndex(ele, this.getContentPanels());
        return i;
    };
    Spry.Widget.TabbedPanels.prototype.getCurrentTabIndex = function () {
        return this.currentTabIndex;
    };
    Spry.Widget.TabbedPanels.prototype.getTabbedPanelCount = function (ele) {
        return Math.min(this.getTabs().length, this.getContentPanels().length);
    };
    Spry.Widget.TabbedPanels.addEventListener = function (element, eventType, handler, capture) {
        try {
            if (element.addEventListener) element.addEventListener(eventType, handler, capture);
            else if (element.attachEvent) element.attachEvent("on" + eventType, handler);
        } catch (e) {}
    };
    Spry.Widget.TabbedPanels.prototype.cancelEvent = function (e) {
        if (e.preventDefault) e.preventDefault();
        else e.returnValue = false;
        if (e.stopPropagation) e.stopPropagation();
        else e.cancelBubble = true;
        return false;
    };
    Spry.Widget.TabbedPanels.prototype.onTabClick = function (e, tab) {
        this.showPanel(tab);
        return this.cancelEvent(e);
    };
    Spry.Widget.TabbedPanels.prototype.onTabMouseOver = function (e, tab) {
        this.addClassName(tab, this.tabHoverClass);
        return false;
    };
    Spry.Widget.TabbedPanels.prototype.onTabMouseOut = function (e, tab) {
        this.removeClassName(tab, this.tabHoverClass);
        return false;
    };
    Spry.Widget.TabbedPanels.prototype.onTabFocus = function (e, tab) {
        this.hasFocus = true;
        this.addClassName(tab, this.tabFocusedClass);
        return false;
    };
    Spry.Widget.TabbedPanels.prototype.onTabBlur = function (e, tab) {
        this.hasFocus = false;
        this.removeClassName(tab, this.tabFocusedClass);
        return false;
    };
    Spry.Widget.TabbedPanels.KEY_UP = 38;
    Spry.Widget.TabbedPanels.KEY_DOWN = 40;
    Spry.Widget.TabbedPanels.KEY_LEFT = 37;
    Spry.Widget.TabbedPanels.KEY_RIGHT = 39;
    Spry.Widget.TabbedPanels.prototype.onTabKeyDown = function (e, tab) {
        var key = e.keyCode;
        if (!this.hasFocus || (key != this.previousPanelKeyCode && key != this.nextPanelKeyCode)) return true;
        var tabs = this.getTabs();
        for (var i = 0; i < tabs.length; i++)
        if (tabs[i] == tab) {
            var el = false;
            if (key == this.previousPanelKeyCode && i > 0) el = tabs[i - 1];
            else if (key == this.nextPanelKeyCode && i < tabs.length - 1) el = tabs[i + 1];
            if (el) {
                this.showPanel(el);
                el.focus();
                break;
            }
        }
        return this.cancelEvent(e);
    };
    Spry.Widget.TabbedPanels.prototype.preorderTraversal = function (root, func) {
        var stopTraversal = false;
        if (root) {
            stopTraversal = func(root);
            if (root.hasChildNodes()) {
                var child = root.firstChild;
                while (!stopTraversal && child) {
                    stopTraversal = this.preorderTraversal(child, func);
                    try {
                        child = child.nextSibling;
                    } catch (e) {
                        child = null;
                    }
                }
            }
        }
        return stopTraversal;
    };
    Spry.Widget.TabbedPanels.prototype.addPanelEventListeners = function (tab, panel) {
        var self = this;
        Spry.Widget.TabbedPanels.addEventListener(tab, "click", function (e) {
            return self.onTabClick(e, tab);
        }, false);
        Spry.Widget.TabbedPanels.addEventListener(tab, "mouseover", function (e) {
            return self.onTabMouseOver(e, tab);
        }, false);
        Spry.Widget.TabbedPanels.addEventListener(tab, "mouseout", function (e) {
            return self.onTabMouseOut(e, tab);
        }, false);
        if (this.enableKeyboardNavigation) {
            // XXX: IE doesn't allow the setting of tabindex dynamically. This means we can't
            // rely on adding the tabindex attribute if it is missing to enable keyboard navigation
            // by default.
            // Find the first element within the tab container that has a tabindex or the first
            // anchor tag.
            var tabIndexEle = null;
            var tabAnchorEle = null;
            this.preorderTraversal(tab, function (node) {
                if (node.nodeType == 1 /* NODE.ELEMENT_NODE */ ) {
                    var tabIndexAttr = tab.attributes.getNamedItem("tabindex");
                    if (tabIndexAttr) {
                        tabIndexEle = node;
                        return true;
                    }
                    if (!tabAnchorEle && node.nodeName.toLowerCase() == "a") tabAnchorEle = node;
                }
                return false;
            });
            if (tabIndexEle) this.focusElement = tabIndexEle;
            else if (tabAnchorEle) this.focusElement = tabAnchorEle;
            if (this.focusElement) {
                Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "focus", function (e) {
                    return self.onTabFocus(e, tab);
                }, false);
                Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "blur", function (e) {
                    return self.onTabBlur(e, tab);
                }, false);
                Spry.Widget.TabbedPanels.addEventListener(this.focusElement, "keydown", function (e) {
                    return self.onTabKeyDown(e, tab);
                }, false);
            }
        }
    };
    Spry.Widget.TabbedPanels.prototype.showPanel = function (elementOrIndex) {
        var tpIndex = -1;
        if (typeof elementOrIndex == "number") tpIndex = elementOrIndex;
        else // Must be the element for the tab or content panel.
        tpIndex = this.getTabIndex(elementOrIndex);
        if (!tpIndex < 0 || tpIndex >= this.getTabbedPanelCount()) return;
        var tabs = this.getTabs();
        var panels = this.getContentPanels();
        var numTabbedPanels = Math.max(tabs.length, panels.length);
        for (var i = 0; i < numTabbedPanels; i++) {
            if (i != tpIndex) {
                if (tabs[i]) this.removeClassName(tabs[i], this.tabSelectedClass);
                if (panels[i]) {
                    this.removeClassName(panels[i], this.panelVisibleClass);
                    panels[i].style.display = "none";
                }
            }
        }
        this.addClassName(tabs[tpIndex], this.tabSelectedClass);
        this.addClassName(panels[tpIndex], this.panelVisibleClass);
        panels[tpIndex].style.display = "block";
        this.currentTabIndex = tpIndex;
    };
    Spry.Widget.TabbedPanels.prototype.attachBehaviors = function (element) {
        var tabs = this.getTabs();
        var panels = this.getContentPanels();
        var panelCount = this.getTabbedPanelCount();
        for (var i = 0; i < panelCount; i++)
        this.addPanelEventListeners(tabs[i], panels[i]);
        this.showPanel(this.defaultTab);
    };
})(); // EndSpryComponent